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12th Standard Biology English Medium Free Online Test Creative One Mark Questions with Answer Key - Part Five

12th Standard

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Biology

Time : 00:10:00 Hrs
Total Marks : 10

    Answer all the questions

    10 x 1 = 10
  1. Which among the following animals exhibit ovoviviparity?

    (a)

    frog

    (b)

    shark

    (c)

    sheep

    (d)

    hen

  2. Match and select the correct option

    Column I Column II
    a. Proliferative phase 1. Breakdown of endometrium lining
    b. Secretory phase 2. Follicular phase
    c. Menstruation 3. Luteal phase

     

    (a)
    a b c
    3 2 1
    (b)
    a b c
    3 2 1
    (c)
    a b c
    1 3 2
    (d)
    a b c
    3 1 2
  3. Wodd Breast feeding week is observed during.

    (a)

    March 1stweek

    (b)

    December 1st week

    (c)

    August 1stweek

    (d)

    July 1stweek

  4. In this Assisted Reproductive Technology (ART), the sperms and egg are allowed to united outside the body and then transformed into the woman's uterus.

    (a)

    Intra - uterine insemination (IUI)

    (b)

    In vitro Fertilization (IVF)

    (c)

    Zygote Intra - Fallopian Transfer (ZIFT)

    (d)

    Intra uterine transfer (IUT)

  5. ABO blood group is a classical example for __________

    (a)

    Multiple allelism

    (b)

    Pleotropism

    (c)

    Incomplete dominance

    (d)

    Polygenic mechanism

  6. DNA fmger printing technique was developed by

    (a)

    Frederick Sanger

    (b)

    Alex Jeffrey

    (c)

    Hershey

    (d)

    Rosalind Franklin

  7. Centrifugal selection refers to ______________

    (a)

    Directional selection

    (b)

    Disruptive selection

    (c)

    Stabilising selection

    (d)

    Kin selection

  8. Which statement is wrong regarding the malaria?

    (a)

    In the human liver, the sporozoites undergo sexual fission

    (b)

    Erythrocytes lyse and relase the merozoites and haemozoin

    (c)

    In the mosquito's gut, the ookinete is formed

    (d)

    Male and female gametes develop in the body of a mosquito.

  9. The enzyme attached to RNA of HIV is _________________

    (a)

    RNA polymerase

    (b)

    reverse transcriptase

    (c)

    primase

    (d)

    endonuclease

  10. What gases are produced in anaerobic sludge digesters?

    (a)

    Methane and CO2 only

    (b)

    Methane, hydrogen sulphide and CO2

    (c)

    Methane, hydrogen sulphide and O2

    (d)

    Hydrogen sulphide and CO

    (e)

    Consumption of organic matter in the water is higher by the microbes

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